KQo line-check please

Villain is 18/3 over only 30 hands. Weak river fold?

Party Poker No-Limit Hold'em, $ BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG+1 ($99)
UTG+2 ($108.20)
MP1 ($100)
Hero ($141.50)
MP3 ($155.05)
CO ($50)
Button ($135.85)
SB ($114.60)
BB ($151.14)
UTG ($202.01)

Preflop: Hero is MP2 with Khttp://www.flopturnriver.com/phpBB2/...miles/club.gif, Qhttp://www.flopturnriver.com/phpBB2/...iles/spade.gif. CO posts a blind of $1. SB posts a blind of $0.50.
UTG calls $1, 2 folds, MP1 calls $1, Hero raises to $7, 3 folds, SB (poster) calls $6.50, 1 fold, UTG folds, MP1 calls $6.

Flop: ($24) Khttp://www.flopturnriver.com/phpBB2/...es/diamond.gif, Thttp://www.flopturnriver.com/phpBB2/...es/diamond.gif, 2http://www.flopturnriver.com/phpBB2/...es/diamond.gif (3 players)
SB bets $8, MP1 folds, Hero raises to $24, SB calls $16.

Turn: ($68) 8http://www.flopturnriver.com/phpBB2/...miles/club.gif (2 players)
SB checks, Hero checks.

River: ($68) 6http://www.flopturnriver.com/phpBB2/...iles/spade.gif (2 players)
SB bets $24.2, Hero folds.

Final Pot: $88.20

Looks to me like a set betting out on the flop to see what's up. When you check the turn he thinks you don't have the flush and leads the river.

You are not ahead enough times to make this call.